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Intangible Assets and Goodwill (Summary Of Changes In The Carrying Amount Of Goodwill) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2017 | Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2015
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of year |  | $ 278,067,000 | $ 369,985,000 |
Additions |  | 36,934,000 | 0 |
Impairment |  | 0 | (92,000,000) | $ 0
Translation adjustments |  | 40,000 | 82,000 |
Balance, end of year | $ 315,041,000 | 315,041,000 | 278,067,000 | $ 369,985,000
OpenEdge [Member] |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of year |  | 212,062,000 |  |
Additions |  | 36,934,000 |  |
Translation adjustments |  | 40,000 |  |
Balance, end of year | 249,036,000 | 249,036,000 | 212,062,000 |
Data Connectivity and Integration [Member] |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of year |  | 19,040,000 |  |
Additions |  | 0 |  |
Translation adjustments |  | 0 |  |
Balance, end of year | 19,040,000 | 19,040,000 | 19,040,000 |
Application Development and Deployment [Member] |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Balance, beginning of year |  | 46,965,000 |  |
Additions |  | 0 |  |
Impairment | (92,000,000) |  | (92,000,000) |
Translation adjustments |  | 0 |  |
Balance, end of year | $ 46,965,000 | $ 46,965,000 | $ 46,965,000 |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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